Can't connect to multiplayer

Hello,
Tody I downloaded this game an did the tutorial. But then I had a problem to connect to the servers because it seems to be that I can not find any other player.
I am running the game on an 8g Ipod with IOS 5.1 on it. It shows me that I cannot find other players and I was really exited to play this game. I hope that I can get help with this isseu. Thnx